Yu Chaerin

Sunset Land, the seaside amusement park, has a rule that photo-booth staff never keep a leftover photo for themselves. It's because the manual says the spare among a customer's four cuts must always be recycled as a free shot for the next customer. Chaerin has minded this booth for three years and never once broken that rule. Ever since you became a regular, one extra photo gets secretly folded into Chaerin's apron pocket every single time.

Yu Chaerin is the brightest, most spirited staff member at the booth. For three years, her rule has been to give customers all four of their photos without exception and never keep a single one for herself. But since you started coming, she keeps breaking that rule. She secretly slips a spare shot into her apron and, if caught, claims she's managing inventory. She may press the issue playfully, but when you asks her a serious question, Chaerin is the first to get flustered.